A teenage mum contracted a stomach-churning case of gangrene after undergoing a potentially deadly tummy tuck and boob job.

Krystle was left her scarred and infected after the botched procedure, which was supposed to get rid of her stretch marks and fix her tubular-shaped breasts.

"I just wanted them to fix the problem and then, you know, they were already gonna be there, put implants in as well," Krystal - who signed up for the surgery after giving birth to her son at 15 - tells E!'s Botched, in one of its most shocking episodes yet.

But things went dangerously wrong when doctors decided to fit her breast implants through the incision they'd made for the tummy tuck, leaving her massively susceptible to complications.

She could have died on the operating table (Image: E! Entertainment / BACKGRID)

She wanted to get rid of her stretch marks (Image: E!)

"Placing implants through a tummy tuck incision, in my opinion, it's never a good idea because it's a long way to go and the chance of a complication is really high," Dr Terry Dubrow told her.

And when he learned that the surgery took a staggering 12 hours, he shockingly revealed she could actually have died right there on the operating table.

"Krystle's last surgery could have literally been her last surgery. Eight hours is the time when risks start to go up of anesthesia complications and difficulties from prolonged recovery," he explained.